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macros.a65
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macros.a65
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; ----------------------------------------------------------------------------
; Compound instructions
; Add without carry
.macro add u,v
.ifblank u v
.error "Missing parameter for add instruction"
.else
.ifblank v
clc
adc u
.else
clc
adc u,v
.endif
.endif
.endmacro
; Subtract without carry
.macro sub u,v
.ifblank u v
.error "Missing parameter for sub instruction"
.else
.ifblank v
sec
sbc u
.else
sec
sbc u,v
.endif
.endif
.endmacro
; ----------------------------------------------------------------------------
; If-then-else
.macro if_mi
.scope
bpl __else__
.endmacro
.macro if_pl
.scope
bmi __else__
.endmacro
.macro if_vs
.scope
bvc __else__
.endmacro
.macro if_vc
.scope
bvs __else__
.endmacro
.macro if_cs
.scope
bcc __else__
.endmacro
.macro if_cc
.scope
bcs __else__
.endmacro
.macro if_eq
.scope
bne __else__
.endmacro
.macro if_ne
.scope
beq __else__
.endmacro
.macro else
jmp __end_if__
__else__:
.endmacro
.macro end_if
.ifndef __else__
__else__:
.endif
__end_if__:
.endscope
.endmacro
; ----------------------------------------------------------------------------
; Long conditionals
.macro if_pl_jmp
.scope
bpl __then__
jmp __else__
__then__:
.endmacro
.macro if_mi_jmp
.scope
bmi __then__
jmp __else__
__then__:
.endmacro
.macro if_vc_jmp
.scope
bvc __then__
jmp __else__
__then__:
.endmacro
.macro if_vs_jmp
.scope
bvs __then__
jmp __else__
__then__:
.endmacro
.macro if_cc_jmp
.scope
bcc __then__
jmp __else__
__then__:
.endmacro
.macro if_cs_jmp
.scope
bcs __then__
jmp __else__
__then__:
.endmacro
.macro if_ne_jmp
.scope
bne __then__
jmp __else__
__then__:
.endmacro
.macro if_eq_jmp
.scope
beq __then__
jmp __else__
__then__:
.endmacro
; ----------------------------------------------------------------------------
; While loops
.macro loop
.scope
continue:
.endmacro
.macro while_pl
bpl continue
break:
.endscope
.endmacro
.macro while_mi
bmi continue
break:
.endscope
.endmacro
.macro while_vc
bvc continue
break:
.endscope
.endmacro
.macro while_vs
bvs continue
break:
.endscope
.endmacro
.macro while_cc
bcc continue
break:
.endscope
.endmacro
.macro while_cs
bcs continue
break:
.endscope
.endmacro
.macro while_ne
bne continue
break:
.endscope
.endmacro
.macro while_eq
beq continue
break:
.endscope
.endmacro
.macro forever
jmp continue
break:
.endscope
.endmacro
; ----------------------------------------------------------------------------
; Begin-end blocks
.macro begin
.scope
continue:
.endmacro
.macro end
.ifndef continue
.error "end without begin"
.endif
break:
.endscope
.endmacro